body{font-size:14px;font-family:"Microsoft YaHei",Arial,Helvetica,sans-serif;color:#000}
::after,::before,a,abbr,acronym,address,applet,article,aside,audio,b,big,blockquote,body,canvas,caption,center,cite,code,dd,del,details,dfn,div,dl,dt,em,embed,fieldset,figcaption,figure,footer,form,h1,h2,h3,h4,h5,h6,header,hgroup,html,i,iframe,img,ins,kbd,label,legend,li,mark,menu,nav,object,ol,output,p,pre,q,ruby,s,samp,section,small,span,strike,strong,sub,summary,sup,table,tbody,td,tfoot,th,thead,time,tr,tt,u,ul,var,video{margin:0;padding:0;-webkit-tap-highlight-color:transparent;-webkit-box-sizing:border-box}
a{color:#000;text-decoration:none}
ul{list-style:none}
input,textarea{border:none;resize:none;outline:0;-webkit-appearance:none}
.f_left{float:left}
.f_right{float:right}
.clearfix{clear:both}
.width_100{width:100%}
.width_90{width:90%}
.width_85{width:85%}
.width_80{width:80%}
.width_70{width:70%}
.width_60{width:60%}
.width_55{width:55%}
.width_50{width:50%}
.width_45{width:45%}
.width_40{width:40%}
.width_25{width:25%}
.background_f3f3f3{background-color:#f3f3f3}
.background_ffffff{background-color:#fff}
.margin_left_5{margin-left:5%}
.margin_right_5{margin-right:5%}
.margin_top_5{margin-top:5%}
.margin_bottom_5{margin-bottom:5%}
.border_right{border-right:1px solid #f7f7f7}
.border_left{border-left:1px solid #f7f7f7}
.border_top{border-top:1px solid #f7f7f7}
.border_bottom{border-bottom:1px solid #f7f7f7}
.relative{position:relative}
.absolute{position:absolute}
.hide{overflow:hidden}
nav .swiper-container{width:100%;height:100%;margin-left:auto;margin-right:auto}
nav .swiper-slide{text-align:center;font-size:18px;background:#fff;display:-webkit-box;display:-ms-flexbox;display:-webkit-flex;display:flex;-webkit-box-pack:center;-ms-flex-pack:center;-webkit-justify-content:center;justify-content:center;-webkit-box-align:center;-ms-flex-align:center;-webkit-align-items:center;align-items:center}